WRONG!
Human males, like every other male half of a bisexual species, have one primary function: to carry around genetic material until they are able to implant it in a female of the species. There is NOTHING creepy about acting the way any male in nature is supposed to.
The prime difference between Human males and the vast majority of males of other species is that we have the most complex sexual mating process on the planet. One of the disadvantages of being the most highly developed of intelligent species on this planet.
What's worse is that the Human male has the burden of gaining the interest of Human females; HE has to take the initiative and strut, preen, sweet-talk, display male prowess, in short do all the sexual dances necessary to gain and then maintain the female's interest.
Just because a female does not find that particular male of interest does not make his attempts "creepy." More like natural selection at work. :shrug:
In any case, social mores dictate how anyone is supposed to act in a public group setting. Part of this includes proper time and place, which public locker rooms, showers, and restrooms are not (unless someone is filming a porn movie).
No one with a true sense of decency would tolerate seeing a person act inappropriately or in an unwanted manner toward another person, and someone will almost always step up and act to stop such things.
All of the above applies to any situation. However, you are correct in that true transgendered have no more interest in members of the sex they wish to transform into than anyone else born of that sex...unless they are Lesbian, Gay, or bisexual.